<?php 
/**
* teacher入口
*/
class Teacher_home extends CI_Controller
{
    
    function __construct()
    {
        parent::__construct();
        //登陆状态检测
        if(!$this->session->userdata('r_user_in'))
            redirect('home');
        //权限检测
        if($this->session->userdata('r_role_id') != 2)
            redirect('home');
    }

    function index()
    {
        //准备数据
        $data = array();
        
        $this->load->model('teacher_model');
        $this->load->model('user_model');
        $username=$this->session->userdata('r_username');
        $user=$this->user_model->get_by_username($username);
        $teacher=$this->teacher_model->get_by_user_id($user['id']);
        $teacher=$this->teacher_model->get_teacher_by_id($teacher['id']);
        
        if($teacher['pass']==0)
        {
            return $this->teacher_for_check();
        }

        $this->load->model('knowledge_point_model');
        $this->load->model('test_point_model');
        $this->load->model('question_model');
        $this->load->model('module_model');
        $this->load->model('teacher_model');
        $this->load->model('student_model');

        $data['teacher']=$teacher;
        $data['title']=$teacher['name'];
        $data['knowledge_point_count']=$this->knowledge_point_model->count_all();
        $data['test_point_count']=$this->test_point_model->count_all();
        $data['question_count']=$this->question_model->count_all();
        $data['module_count']=$this->module_model->count_all();
        
        $data['my_logic_class_count']=$this->teacher_model->get_logic_class_count($teacher['id']);
        $data['my_students_count']=$this->teacher_model->get_students_count($teacher['id']);
        $data['my_module_count']=$this->teacher_model->get_private_module_count($teacher['id']);
        
        $this->load->view('teacher_home/index',$data);
    }

    /**
     * 退出，删除session中的数据
     * @return [type]
     */
    function teacher_for_check()
    {
        $this->session->sess_destroy();
        $data['error_message']='您的账号尚未通过审核，请在审核通过后使用';
        $this->load->view('error',$data);
    }

    /**
     * 退出，删除session中的数据
     * @return [type]
     */
    function logout()
    {
        $this->session->sess_destroy();
        redirect('home');
    }
    
    /**
     * 修改密码
     * @return [type] [description]
     */
    function change_password()
    {
        //表单验证
        if($this->form_validation->run('teacher_home/change_password'))
        {
            //post方法
            //读取数据
            $old_password=$this->input->post('old_password');
            $new_password=$this->input->post('new_password');
            
            $username=$this->session->userdata('r_username');
            $this->load->model('user_model');
            $user=$this->user_model->check_user_valid($username,$old_password);
            if($user)
            {
                $user['password']=md5($new_password);
                if($this->user_model->update($user['id'],$user))
                {
                    $this->session->set_flashdata('message','修改成功');
                    redirect('teacher_home/index');
                }
                else
                {
                    $this->session->set_flashdata('message','操作失败');
                    redirect('teacher_home/index');
                }
                    
            }
            else{
                $this->session->set_flashdata('message','密码错误，修改失败');
                redirect('teacher_home/index'); 
            }
                        
        }

        //get方法
        $data['title']='修改密码';
        $this->load->view('teacher_home/change_password',$data);
    }
}
 